One of my main motivations to do Symmetry was to give the reader another perspective on the story of Mother 3. What ever happened to Lighter and Fuel's house? How did Lucas and Claus escape? What was Flint doing when Thomas knocked on his door that night? ( A small part, but you get the idea. )
I want to make Symmetry more than just a direct "port" of Mother 3. I want it to have a story all it's own. We get a preview of this concept on page 9, with the fate of both Lighter and Fuel revealed as well as a new charecter introduced : Coaleen, who we'll learn about later.